Fuel saving device



Jan. 28, 1936. R. c. LEE

FUEL SAVING DEVICE Filed Aug. 3, 1934 //VVE/V70K 199/ 67 166 Patented Jan. 28, 1936 EATS mane

PATENT OFFICE Application August 3,

6 Claims.

This invention relates to a fuel saving device which may be termed a carburetor and one object of this device is to provide a device of this character which is so constructed that a mixture of air and liquid fuel such as gasoline may be injected into a mixing chamber of a casing adapted to be attached to the fuel intake of an internal combustion engine and the fuel thoroughly mixed in the chamber with air drawn into the same by suction during operation of the engine to create a good, combustible mixture.

Another object of the invention is to provide a device of this character wherein the air and charge of vaporized fuel will be drawn into the mixing chamber in proper proportion according to the speed at which the engine is running, this being accomplished due to the fact that the air andvaporized fuel are drawn into the chamber :by suction exerted by the engine. 20 Still another object of the invention is to provide the device with an injector shiftable towards and away from an inlet nipple of the casing whereby the proper suction will be exerted through the injector and the proper quantity of vaporized fuel injected into the casing.

A still further object of the invention is to provide improved means for supplying liquid fuel to the injector and prevent an excessive quantity being drawn into the injector due toan excess quantity of gasoline in the gasoline container of the device.

Another object of the invention is to produce a device of this character which is simple in construction, easy to adjust and not liable to get out of order.

With these and numerous other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims.

In the-accompanying drawing forming a part of this application:

Figure 1 is a section taken longitudinally throughthe improved carburetor;

Figure 2 is a section taken transversely through the air inlet of the mixing casing taken along the line 22 of Figure l; and

Figure 3 is a top plan view of the injector forming part of the carburetor.

In describing the invention, I shall refer to the drawing in which similar reference characters designate corresponding parts throughout the several 'views. The casing i which defines a mixing chamber 2 is cylindrical in shape and 1934, Serial No. 738,357

at its open inner end is provided with a flange 3 having bolt receiving openings 4 formed therein in order that the casing may be connected to the intake manifold of an internal combustion engine. At its outer end the casing is formed with a head 5 through which extends a nipple 6 carrying a securing nut 7 upon its outer portion and intermediate its length the casing is provided with a side arm 8 constituting an air inlet. The outer end portion of this arm is extended outwardly as shown in Figure 2 to form a mouth 9 in which is fitted a ring which is held in place by a set screw 1 l shown in Figure 1. The ring constitutes a valve seat and it will be noted that the ring has a frusto-conical outer face which converges inwardly to concentrate air as it is drawn inwardly through the arm. A cross bar I 2 extends diametrically across the ring if] and through this bar extends a valve stem [3 having at its inner end a concavd-convexed valve head l4 normally held against the inner end of the valve seat by a spring 15 coiled about the stem between the cross bar and an abutment it carried by the outer end portion of the stem. An adjusting nut I! is also carried by the stem to engage the abutment and regulate tension of the spring. By this arrangement, the suction necessary to open the valve can be controlled and the quantity of air drawn into the mixing chamber during operation of the engine regulated.

vaporized liquid fuel such as gasoline is to be fed into the mixing chamber during operation of the engine and in order to do so there has been provided an injector I8 having an enlarged base l9 which rests upon a bracket extending longitudinally from the outer end of the casing i below the nipple 6. At its inner end the bracket is bent upwardly to form an attaching portion or tongue 2! formed with an opening through which the nipple passes and this tongue is engaged between the nut i and end of the casing so that when the nut is tightened thebracket will be firmly secured in a horizontal position and the nipple also secured in place.

A spring 22 urges the injector away from the casing and in order to adjust the injector towards the casing there has been provided a rod 23 extending longitudinally of the bracket through the base 59 and carrying an adjusting element 2Q which when rotated will cause the injector to move longitudinally upon the bracket,'after the injector has been shifted along the bracket or track to a desired position and the lock nut 25 tightened, the injector will be firmly held in a set position With its inner discharge end spaced 7 er desired material.

7 between the injector and the outer end of the 7 outwardly from the nipple or extended into the nipple a desired distance according to the suction'which it is desired to have created through the bore 26 of the injector. The bore is enlarged in spaced relation to' the discharge end thereof to form a chamber 21 having side openings 28 constituting air inlets and in order to control flow of air throughthe injector there has been provided a needle valve 29. This needle valve is movable towards and away from a closed position by grasping its turning knob 36 and rotating the valve and as the knob is engaged by the free end of a spring strip 3| carried by the casing of the injector the valve will be held in an adjusted position.

Liquid fuel is supplied to the injector through atube or pipe 32v extending downwardly therefrom through a slot formed in the'bracket and below the bracket the tube carries a socket 33 to reoeivethe upper end of the neck 34' which projects upwardly from the cap or cover 3513f a container 36 formed of glass, metal or any oth- The tube 32iextends down into the container quite a distance and has its lower portion engaged through a float 31 carrying a depending yoke 38. This yoke at its lower end is connected to the stem of a valve 39 eling over a rough road jolting can not cause flooding asthe valve will close as the gasoline surges upwardly in the container and eflectively prevent too much entering the container.

7 When this improved carburetor is in use, the flange 3 is attached to the intake of an internal combustion engine and the inlet neck of the container connected'with a pipe leading from the fuel tank. The injector is adjusted to approximately the proper position upon the bracket and the butterfly valve 42 opened as far as desired. When the engine is turned over, suction will be created through the casing I and airidrawn in through the side arm 8 while at the same time air will be drawn through the nipple and create a suction through the bore of the. injector. The air'sucked through the injector creates a partial vacuum in the tube 32 and gasoline will be drawn upwardly through this tube to mix with the air drawn through the injector and form a vaporous mixture which will be discharged as aljet from the injectorthrough the nipple into the chamber 2. This vaporized fuel will mix with air drawn into the chamber through the side arm 8 and discharged into the intake manifold of the engine as a combustible mixture. The amount of suction will be controlled by the speed at which the engine is runningand consequently the quantity of fuel will .be automatically regulated. Shifting of theinjector towards or away from the nipple will control suction exerted through the injector and fthereforea lean or rich mixture can be provided as necessary. As the vapor delivered from the injector .to the nipple 6 passes through space nipple, it can be seen by an attendant who can thus determine whether the vaporis feedings properly and'in the desired quantity. 'Flow ;of.

fuel into the container'will be controlled by the" float actuated valve 39 "and'therefore the icontainer will at all times be filled witli the proper quantity of fuel and can not become flooded.'

From the foregoing description of the construction of my improved device, the operation thereof and the method of applying the same to use will be readily understood. It willbe seen that I have provided a simple, inexpensive and efiicient means for carrying out the objects of the invention and while I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes iniform, proportion and in the minor details of construction may be resorted to, without departing from the spirit or sacrificing any of the principles of the invention.

Having thus described the invention what is claimed is: r

1.- A device of the character described comprising a casing having a fuel inlet'at its outer end and an air inlet arm intermediate its length' open at its outer end, a ring in the arm constitut ing a valve'seat and having an inwardly directed frusto-conical outer surface, a, bar carried by and extending diametrically across said ring at the outer end thereof, a concave-convexed valve head in said arm inwardly of the ring and having its convexed face presented outwardly and slidably engaged, a stem for said valve head extending outwardly through said bar, a spring urging said stem outwardly to yieldably hold the. valve head seated against theinner end of said ring, and means for injecting fuel into said casing through the inlet thereof comprisingan injector facing the outer end of said casing in axial alinement with said fuel inlet and a fuel'container communicating with said injector.

2. A device of the character described comprising a casing having a fuel'inlet nipple projecting outwardly from its outer end and, having its inner end adapted for connection with the intake of an engine, a bracket extending longitudinally upwardly extending attaching arm at its inner end bearing against the outer end of said casing about said nipple, a securing nut uponrsaid nippleengaging the attaching arm to clamp the" bracket against the casing when tightened, an injector slidably carried by said bracket and shiftable along the same towards and away from the outer end of the nipple, means yieldably resisting movement of the injector towards the nipple, and a fuel container communicating with said injector.

from :the outer end of said casing andlhaving an 3, A device of the character described compris-' ing a casing having afuel inlet at its outer end and having its inner end adapted for connection with the intake of an engine, an air inlet being provided intermediate the length of the casing, a

bracket extending longitudinally from: the outer end of said casing an injectorsupported upon 7 said bracket in axial alinement with saidfuel inlet, a rod extending longitudinally of said bracket and engaged through said injector, a

spring urging said injectortowards the outer end of said bracket, an adjusting element threaded upon said rod and engaging said injector to shift '70 7 action of said spring and hold the injector in an the injector towards saidfuel inlet in opposition to eating with said injector. I

4. A deviceof the character described comprising a casing having a fuel inlet at its outer end adjusted position, and a fuel container c'o'rnmuni- V V 25 towards and inner end adapted for connection with the intake of. an engine, an air inlet being provided'intermediate the length of the casing, a bracket extending longitudinally from the outer end of said casing, an injector supported upon said bracket in axial alinement with said fuel inlet, and shiftable along the bracket towards and away from the fuel inlet, a tube extending downwardly from said injector through said bracket, a fuel container secured about said tube and having an inlet in its bottom, an inwardly opening valve for the inlet of the container, and a float in said container having a yoke extending downwardly therefrom and engaged with the valve for moving closed position 5. A device of the character described comprising a casing having its inner end adapted for connection with the intake of. an engine and having a fuel inlet at its outer end, an air inlet arm extending from said casing, an inwardly opening valve for said arm yieldably held closed, a manually operated valve in said casing between the arm and inner end of the casing, an injector facing the outer end of said casing and adjustable away from the fuel inlet thereof, a

and having its a tube leading from the upper end of said container into sa'd injector, a fuel inlet neck at the bottom of the container, a valve movable into and out of. position for closing the fuel inlet neck, and a float in said container connected with the valve of the neck for closing the valve when fuel in the container raises the float above a predetermined position.

6. A device of the character described comprising a casing having a fuel inlet at its outer end and having its inner end adapted for with the intake of an engine, a track from the outer end of said casing longitudinally thereof and provided with an opening intermediate its length, an injector slidable along said track towards and away from the inlet of the casing, a fuel container below said track having a disfuel container,

track and connecting the container with the injector, resilient means yieldably resisting movement of the injector towards the fuel inlet, adjustable means for limiting movement of the injector away from the fuel inlet.

ROY C. LEE. 

